A combined method of combing and drawing ramie, flax tow and wool fibers

Abstract

This invention relates to a combined combing and drawing method for ramie, short flax, and wool fibers, comprising the following steps: Step A: A wool combing machine combs the fibers into a web, and after passing through a take-up roller, the fiber web is bundled into a periodically uneven combed sliver through a collecting hopper funnel; Step B: Multiple periodically uneven combed slivers output from multiple wool combing machines are combined along a specific path, so that the coarse and fine segments on the multiple combed slivers are correspondingly combined, thereby improving the unevenness of the combined sliver; This invention uses computer simulation of fiber movement to determine the optimal position of the collecting hopper funnel, which can improve the unevenness of the combed sliver, and then, based on the periodicity of the unevenness of the combed sliver, the path difference at the head end of the combed sliver is adjusted by a guide roller, and the position of the guide roller is determined by simulation calculation, so that the coarse and fine segments of the periodically uneven combed sliver are correspondingly combined, which can significantly improve the unevenness of the combined sliver.

Description

Technical Field

[0001] This invention belongs to the field of textile technology, and specifically relates to a method for combing and drawing ramie, flax, and wool fibers. Background Technology

[0002] In the conventional combing process of ramie, short flax, and wool fibers, since the average fiber length is around 100mm, wool-type combing machines are used. In each combing cycle, the ramie / wool sliver is fed into the combing machine via feed rollers, and after being combed by combing elements such as the cylinder and top comb, a fiber tuft of a certain length is output. This tuft overlaps with the fiber tuft output in the previous combing cycle according to a certain effective output length, forming a fiber web, and is then gathered into a combed sliver through the tufting hopper. The combed sliver exhibits significant periodicity, and its periodicity is related to the fiber length and combing process parameters.

[0003] Currently, a single wool combing machine has only one combing unit, therefore, it typically requires 4-5 drawing processes after combing to improve the periodic unevenness of the combed sliver. With technological advancements, the concept of directly combining and drafting the combed slivers from multiple wool combing machines using a combined combing and drawing technology has been proposed, enabling continuous production of wool combed fibers. Ramie, short flax, and wool fibers have relatively long fiber lengths and significant length unevenness. Improving the unevenness of the combed slivers and the combined slivers in combined combing and drawing technologies for ramie, short flax, and wool fibers is a pressing challenge that needs to be addressed.

[0004] To improve the unevenness of the combed sliver, cotton combing machines offer several solutions. For example, the technical solution in invention patent CN102704052A calculates the optimal position of the tufting bucket trumpet opening on a cotton combing machine to improve sliver unevenness. However, unlike the fixed bundled triangle area of ​​a cotton combing machine, the take-up roller on a wool combing machine swings back and forth with the take-up carriage, thus changing the bundled triangle area and significantly affecting the optimal position of the tufting bucket trumpet opening. Therefore, the technical solution described in the aforementioned patent is not suitable for determining the optimal tufting bucket trumpet opening position of a wool combing machine.

[0005] Furthermore, current cotton spinning combing and drawing frames utilize eight combing units to separately comb the slivers. These combed slivers are then directly combined on the guide table and further drawn by the drawing and drafting mechanism to form a combined sliver output, thus reducing unevenness to some extent. However, these machines only improve evenness through the combining process itself, without addressing the periodic unevenness patterns to ensure proper matching of thick and thin fibers on each combed sliver. Therefore, their improvement on unevenness is limited. Cotton fibers are relatively short (20-35mm), and under different combing processes, the periodic variation in cotton combed sliver unevenness is small. Therefore, the path for combining combed slivers on a cotton combing machine does not need to be changed. In contrast, ramie, short flax, and wool fibers are long (around 100mm) and have greater unevenness. Under different combing processes, the periodic variation in combed sliver unevenness is significant, and this has a substantial impact on the combining effect. Therefore, in order to effectively improve the unevenness of the combed slivers when ramie, flax, and wool fibers are combed together, it is necessary to reasonably set the path of each combed sliver during the combing process according to the periodicity of the unevenness of the combed slivers, so that the coarse and fine details on each combed sliver correspond to each other during the combing process. Only in this way can the unevenness of the combed slivers be significantly improved. Summary of the Invention

[0006] The main objective of this invention is to propose a method for combing and slivering ramie, flax, and wool fibers, which can effectively solve the problems in the prior art.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A method for combing and slivering ramie, flaxseed, and wool fibers, comprising the following steps:

[0009] Step A: The combing machine combs the fibers into a web. After passing through the take-up roller, the fiber web is bundled into periodically uneven combed strips through the tufting hopper.

[0010] In step A, the optimal position of the tuft funnel opening is determined to improve the unevenness of the combed sliver;

[0011] Step B: Multiple combing slivers with periodic unevenness output from multiple combing machines are combined through a specific path to make the coarse and fine segments on the multiple combing slivers correspond and combine, so as to improve the unevenness of the combined slivers.

[0012] In step B, the specific path of each combed sliver is controlled by an adjustable guide roller, which determines the position of the guide roller so that the coarse and fine details of adjacent combed slivers correspond and merge.

[0013] Preferably, the optimal position of the fuzz collection bucket's flared opening can be determined by the following method:

[0014] Computer simulation of fiber movement is used to obtain the arrangement of each fiber in the combed sliver after passing through the bundled triangle region, based on the shape of the bundled triangle region, the speed of the fiber, and the displacement of the fiber at each moment. Then, the unevenness of the combed sliver can be calculated, and the optimal position of the tufting bucket flare can be determined based on the unevenness of the combed sliver.

[0015] Preferably, the specific method includes the following steps:

[0016] The width of the fiber web output by the winding roller is defined as D. When the pulling carriage is swung to the position closest to the flare opening of the filament collection hopper, the vertical distance from the winding roller to the flare opening of the filament collection hopper is h1. When the pulling carriage is swung to the position furthest from the flare opening of the filament collection hopper, the vertical distance from the winding roller to the flare opening of the filament collection hopper is h2. The vertical distance from the flare opening of the filament collection hopper to the edge of the fiber web is W. The diameter of the flare opening of the filament collection hopper is d'.

[0017] Establish a rectangular coordinate system with the take-up roller as the Y-axis, the direction perpendicular to the take-up roller as the X-axis, and the midpoint of the take-up roller as the origin;

[0018] A certain fiber (the i-th fiber) in the fiber web has a Y-axis coordinate of y1(i), a fiber length of l(i), and a fiber fineness of f(i).

[0019] Therefore, within the bundle region, the displacement difference of the i-th fiber on the X-axis is Sx(i), and the displacement on the Y-axis is Sy(i).

[0020] Sx(i) and Sy(i) are obtained by the following formulas;

[0021]

[0022]

[0023] Where h is the vertical distance from the winding roller to the flare opening of the collection bucket at each moment, h1≤h≤h2, and h1 and h2 are related to the overlap length and the effective output length;

[0024] Simulation calculations can obtain the coordinates of the head end of each fiber in the overlapped combed fiber web as [x1(i), y1(i)];

[0025] After the fibers are bundled through the horn of the combing bucket, the coordinates of the fiber ends in the output combed sliver [x2(i), y2(i)] can be obtained. The coordinates of the fiber on the X-axis are x2(i) = x1(i) + Sx(i), and the coordinates on the Y-axis are y2(i) = y1(i) + Sy(i).

[0026] Calculate the unevenness of combed sliver;

[0027] Finally, through simulation calculations, the optimal position of the taut hole of the combing sliver was determined based on the unevenness of the combing sliver.

[0028] Preferably, the position of the guide roller can be determined by the following method:

[0029] Define the combing unit closest to the back roller of the drawing and drafting mechanism as the first unit, the second unit as the second unit, and the farthest unit as the nth unit.

[0030] Based on the simulation method in step A, the coordinates of the head end of the fiber in the combed sliver can be obtained as [x2(i), y2(i)];

[0031] The coordinates of the fibers in the combed sliver output by n combing units are obtained through multiple simulations. The coordinates of the fibers in the combed sliver output by the j-th combing unit are defined as [x2(j,i), y2(j,i)].

[0032] From the first to the nth combing unit, the vertical distances from the exit roller to the guide roller are L1, L2, ..., L... n The horizontal distance from the output roller to the guide roller is an adjustable length, designated as G1, G2, ..., G... n ;

[0033] The distance between the guide roller of the j-th combing machine and the rear roller of the drawing frame is M1, M2, ..., M. n The lengths of the yarn from the exit roller of each combing machine to the back roller of the drawing and drafting mechanism are R1, R2, R3, ..., R... n ;

[0034]

[0035] Therefore, the difference between the head end of the first combed sliver and the head end of the second combed sliver is R1+R2, the difference between the head end of the first combed sliver and the head end of the third combed sliver is R1+R3, and so on. That is, when the combed sliver output from the j-th combing unit reaches the back roller of the drawing and drafting mechanism, the fiber X-axis coordinate is x3(j, i)=x2(j, i)+R j ;

[0036] Finally, the unevenness of the combined slivers after combing is calculated.

[0037] The unevenness of the combined strips is calculated using the following method:

[0038] Given m segments of length Δ, the weight w of the k-th segment of each combed sliver can be calculated. j (k);

[0039] Then the total weight of the merged segment is calculated as w(k);

[0040]

[0041] After merging, the unevenness of the merged strip is the coefficient of variation of the weight w of the m segments;

[0042] Through simulation calculations, the position of the guide roller is determined based on the unevenness of the combed slivers, so that the coarse and fine details of adjacent combed slivers are matched and combined.

[0043] This invention provides a method for combing and slivering ramie, flaxseed, and wool fibers, which has the following beneficial effects:

[0044] This invention uses computer simulation to determine the optimal position of the tuft funnel opening, which can improve the unevenness of the combed sliver. Based on the periodicity of the unevenness of the combed sliver, the guide roller is used to adjust the head end path difference of the combed sliver, and the position of the guide roller is determined by simulation calculation, so that the coarse and fine parts of the periodically uneven combed sliver are matched and combined, which can significantly improve the unevenness of the combined sliver. Attached Figure Description

[0045] Figure 1 This is a schematic diagram of the combing and bundling area and guide rollers of the present invention;

[0046] Figure 2 This is a schematic diagram of the fiber tuft overlap and its weight unevenness curve of the present invention;

[0047] Figure 3 This is a schematic diagram illustrating the calculation of unevenness in n combed slivers according to the present invention. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0049] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0050] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0051] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they may refer to a fixed connection, a detachable connection, or an integral connection; they may refer to a mechanical connection or an electrical connection; they may refer to a direct connection or an indirect connection through an intermediate medium; and they may refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0052] Reference Figure 1 1 is the take-up roller, 2 is the tufting hopper bell mouth, 3 is the output roller, 4 is the guide roller, 4' is the position of the guide roller when c=100mm, 5 is the fiber web, 6 is the path of the combed sliver when passing through guide roller 4 after bundling, and 6' is the path of the combed sliver when passing through guide roller 4' after bundling.

[0053] This invention provides a method for combing and slivering ramie, flax, and wool fibers, comprising the following steps:

[0054] Step A: The combing machine combs the fibers into a web. After passing through the take-up roller, the fiber web is bundled into periodically uneven combed strips through the tufting hopper.

[0055] In step A, the optimal position of the tuft funnel opening is determined to improve the unevenness of the combed sliver;

[0056] The area from the take-up roller to the flared end of the combing machine is defined as the bundling triangle. During bundling, the combined velocity of each fiber is the same. However, due to the difference in the position of each fiber in the fiber web, their component velocities in the direction perpendicular to the take-up roller and parallel to the direction perpendicular to the roller are different, resulting in displacement difference and mixing.

[0057] Therefore, the optimal position of the filament collection bucket's funnel opening can be determined by the following method:

[0058] Computer simulation of fiber movement is used to obtain the arrangement of each fiber in the combed sliver after passing through the bundled triangle region, based on the shape of the bundled triangle region, the speed of the fiber, and the displacement of the fiber at each moment. Then, the unevenness of the combed sliver can be calculated, and the optimal position of the tufting bucket flare can be determined based on the unevenness of the combed sliver.

[0059] The specific method includes the following steps:

[0060] The width of the fiber web output by the winding roller is defined as D. When the pulling carriage is swung to the position closest to the flare opening of the filament collection hopper, the vertical distance from the winding roller to the flare opening of the filament collection hopper is h1. When the pulling carriage is swung to the position furthest from the flare opening of the filament collection hopper, the vertical distance from the winding roller to the flare opening of the filament collection hopper is h2. The vertical distance from the flare opening of the filament collection hopper to the edge of the fiber web is W. The diameter of the flare opening of the filament collection hopper is d'.

[0061] Establish a rectangular coordinate system with the take-up roller as the Y-axis, the direction perpendicular to the take-up roller as the X-axis, and the midpoint of the take-up roller as the origin;

[0062] A certain fiber (the i-th fiber) in the fiber web has a Y-axis coordinate of y1(i), a fiber length of l(i), and a fiber fineness of f(i).

[0063] Therefore, within the bundle region, the displacement difference of the i-th fiber on the X-axis is Sx(i), and the displacement on the Y-axis is Sy(i).

[0064] Sx(i) and Sy(i) are obtained by the following formulas;

[0065] ;

[0066] ;

[0067] Where h is the vertical distance from the take-up roller to the tasseling bucket flare at each moment, h1≤h≤h2, and the combing machine speed is Q clamps / min, that is, within 60 / Q seconds, the vertical distance from the take-up roller to the tasseling bucket flare changes from h1 to h2 and then back to h1. h1 and h2 are related to the overlap length and the effective output length.

[0068] First, according to the "Method for Determining Combing Process Parameters Based on Combing Simulation Based on Fiber Arrangement" disclosed in patent number CN109948210B, the combing process of combed small coils (raw materials fed into the combing machine) in the combing cylinder is simulated. Then, according to the method in the paper Xiao Yuqing. Simulation of Combing Separation and Joining Process [D]. Donghua University, 2020. (Sections 2.1-2.3, pp. 9-24), the combing process of the top comb in the combing is simulated, the combed fiber bundles are separated, and the fiber bundles are overlapped to form a combed fiber web. Through the above simulation calculation, the head end coordinates of each fiber in the overlapped combed fiber web can be obtained as [x1(i), y1(i)].

[0069] After the fibers are bundled through the horn of the combing bucket, the coordinates of the fibers in the output combed sliver can be obtained as [x2(i), y2(i)]. The coordinates of the fibers on the X-axis are x2(i) = x1(i) + Sx(i), and the coordinates on the Y-axis are y2(i) = y1(i) + Sy(i).

[0070] Refer to the method in Section 2.3.2 of the paper "Simulation of Combing Separation and Joining Process" by Xiao Yuqing [D]. Donghua University, 2020, to calculate the unevenness of combed sliver;

[0071] Finally, through simulation calculations, the optimal position of the tufting bucket bell mouth was determined based on the unevenness of the comb strands.

[0072] The unevenness of combed cotton web varies under different feed lengths, pull-out spacings, and effective output lengths.

[0073] In this embodiment, refer to Figure 2 The effective output length of the combing machine is 50-90mm, and the overlap length is 160-200mm;

[0074] Simulation calculations show that the optimal position of the combing bucket's flared end, i.e., the center of the flared end, is 70-100mm vertically from the center of the take-up roller nip line and 180-190mm horizontally from the center of the take-up roller nip line, when the output combing sliver has less unevenness.

[0075] Step B: Multiple combing slivers with periodic unevenness output from multiple combing machines are combined through a specific path to make the coarse and fine segments on the multiple combing slivers correspond and combine, so as to improve the unevenness of the combined slivers.

[0076] In step B, the specific path of each combed sliver is controlled by an adjustable guide roller, which determines the position of the guide roller so that the coarse and fine details of adjacent combed slivers correspond and merge.

[0077] The position of the guide rollers can be determined by the following methods:

[0078] Define the combing unit closest to the rear roller of the drawing and drafting mechanism as unit 1, the next closest as unit 2, and the furthest as unit n. The drawing and drafting mechanism is located at... Figure 1 The left side of the combed bar;

[0079] Based on the simulation method in step A, the coordinates of the head end of the fiber in the combed sliver can be obtained as [x2(i), y2(i)];

[0080] The coordinates of the fibers in the combed sliver output by n combing units are obtained through multiple simulations. The coordinates of the fibers in the combed sliver output by the j-th combing unit are defined as [x2(j,i), y2(j,i)].

[0081] From the first to the nth combing unit, the vertical distances from the exit roller to the guide roller are L1, L2, ..., L... n The horizontal distance from the output roller to the guide roller is an adjustable length, designated as G1, G2, ..., G... n ;

[0082] The distance between the guide roller of the j-th combing machine and the rear roller of the drawing frame is M1, M2, ..., M. n The lengths of the yarn from the exit roller of each combing machine to the back roller of the drawing and drafting mechanism are R1, R2, R3, ..., R... n ;

[0083] ;

[0084] Therefore, the difference between the head end of the first combed sliver and the head end of the second combed sliver is R1+R2, the difference between the head end of the first combed sliver and the head end of the third combed sliver is R1+R3, and so on. That is, when the combed sliver output from the j-th combing unit reaches the back roller of the drawing and drafting mechanism, the fiber X-axis coordinate is x3(j, i)=x2(j, i)+R j ;

[0085] Finally, the unevenness of the combined slivers after combing is calculated.

[0086] Referring to the method in Section 2.3.2 of "Simulation of Combing Separation and Joining Process", the unevenness of the combined slivers is calculated using the following method:

[0087] like Figure 3 As shown, with a segment length of Δ and a total of m segments, the weight w of the k-th segment of each combed sliver can be calculated. j (k);

[0088] Then the total weight of the merged segment is calculated as w(k);

[0089] ;

[0090] After merging, the unevenness of the merged strip is the coefficient of variation of the weight w of the m segments;

[0091] Through simulation calculations, the position of the guide roller is determined based on the unevenness of the combed slivers, so that the coarse and fine details of adjacent combed slivers are matched and combined.

[0092] In this embodiment, when the horizontal distance c between the center of the guide roller and the center of the nip line of the corresponding combing unit is 20-100mm, and the vertical distance d between the centers of adjacent guide rollers is 30mm, the coarse and fine details of adjacent combed slivers can be combined accordingly, achieving effective and uniform combination. The uniformity of the combined sliver is significantly improved after combination.

[0093] This invention uses computer simulation to determine the optimal position of the tuft funnel opening, which can improve the unevenness of the combed sliver. Based on the periodicity of the unevenness of the combed sliver, the guide roller is used to adjust the head end path difference of the combed sliver, and the position of the guide roller is determined by simulation calculation, so that the coarse and fine parts of the periodically uneven combed sliver are matched and combined, which can significantly improve the unevenness of the combined sliver.

[0094] The following specific embodiments further illustrate the effects of the combing and sliver-drawing combined process of ramie, flax, and wool fibers of the present invention.

[0095] Comparative Example 1

[0096] Flax slivers are spun on a conventional combing machine and then drawn in one pass. The average length of the flax fiber is 100mm, the effective output length of the combing machine is 70mm, and the overlap length is 180mm. Eight combed slivers are randomly matched and fed into the drawing machine. After drafting, the unevenness of the output sliver is 3.95%.

[0097] Example 1

[0098] The present invention employs a combined combing and drawing process for ramie, short flax, and wool fibers. Short flax combed slivers are spun on a wool-type combing and drawing machine. The average fiber length of the short flax fibers is 100 mm. The vertical distance between the center of the tufting hopper's trumpet mouth and the take-up roller nip line of each combing machine is 96 mm, and the horizontal distance is 183 mm. The horizontal distance between the center of the guide roller and the center of the exit roller nip line of its corresponding combing unit is 70 mm, and the vertical distance between the centers of adjacent guide rollers is 30 mm. The effective output length of the combing machine is 70 mm, the overlap length is 180 mm, and the unevenness of the output fiber web is 29.4%. After being bundled at the trumpet mouth, the evenness of the combed sliver is 25.7%. After combining and drafting eight combed slivers, the evenness of the output sliver is 2.97%, which is significantly better than the unevenness of the sliver output in Comparative Example 1, and the evenness is significantly improved.

[0099] Example 2

[0100] The present invention employs a combined combing and drawing process for ramie, short flax, and wool fibers. Wool combed slivers are spun on a wool-type combing and drawing frame. The average fiber length of the wool fibers is 80 mm. The vertical distance between the center of the ramie hopper's funnel mouth and the take-up roller nip line of each combing machine is 70 mm, and the horizontal distance is 190 mm. The horizontal distance between the center of the guide roller and the center of the exit roller nip line of its corresponding combing unit is 20 mm, and the vertical distance between the centers of adjacent guide rollers is 30 mm. The effective output length of the combing machine is 50 mm, the overlap length is 200 mm, and the unevenness of the output fiber web is 32.3%. After being bundled at the funnel mouth, the evenness of the combed sliver is 28.4%. After combining and drafting four combed slivers, the evenness of the output ramie sliver is 3.02%. Under the same conditions, this is better than the unevenness of the output sliver from a conventional wool-type combing machine + drawing frame, and the evenness is significantly improved.

[0101] Example 3

[0102] The present invention employs a combined combing and drawing process for ramie, short flax, and wool fibers. Ramie combed slivers are spun on a wool-type combing and drawing machine. The average fiber length of the ramie fibers is 120 mm. The vertical distance between the center of the ramie collection hopper's trumpet opening and the take-up roller nip line on each combing machine is 100 mm, and the horizontal distance is 180 mm. The horizontal distance between the center of the guide roller and the center of the exit roller nip line of its corresponding combing unit is 100 mm. The vertical distance between the centers of adjacent guide rollers is 30mm, the effective output length of the comber is 90mm, the overlap length is 160mm, the unevenness of the output fiber web is 29.9%, and after being bundled through the trumpet mouth, the evenness of the combed sliver is 27.3%. After 12 combed slivers are combined and stretched, the evenness of the output flax sliver is 2.82%. Under the same conditions, the evenness of the flax sliver output by the conventional wool comber + drawing frame is better, and the evenness is significantly improved.

[0103] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for combing and slivering ramie, flaxseed, and wool fibers, characterized in that, Includes the following steps: Step A: The combing machine combs the fibers into a web. After passing through the take-up roller, the fiber web is bundled into periodically uneven combed strips through the tufting hopper. In step A, the optimal position of the tuft funnel opening is determined to improve the unevenness of the combed sliver; Step B: Multiple combing slivers with periodic unevenness output from multiple combing machines are combined through a specific path to make the coarse and fine segments on the multiple combing slivers correspond and combine, so as to improve the unevenness of the combined slivers. In step B, the specific path of each combed sliver is controlled by an adjustable guide roller, which determines the position of the guide roller so that the coarse and fine details of adjacent combed slivers correspond and merge. The optimal position of the flared end of the filament collection bucket can be determined by the following method: Computer simulation of fiber movement is used to obtain the arrangement of each fiber in the combed sliver after passing through the bundled triangle area, based on the shape of the bundled triangle area, the speed of the fiber, and the displacement of the fiber at each moment. Then, the unevenness of the combed sliver can be calculated, and the optimal position of the tufting bucket flare can be determined based on the unevenness of the combed sliver. The specific method includes the following steps: The width of the fiber web output by the winding roller is defined as D When the puller is positioned closest to the nozzle of the hopper, the vertical distance from the puller roller to the nozzle of the hopper is... When the puller is moved to the position furthest from the hopper's flare opening, the vertical distance from the take-up roller to the hopper's flare opening is: The vertical distance from the funnel opening of the fiber optic cable to the edge of the fiber web is W The diameter of the funnel mouth of the hair collection bucket is ； Taking Laura as Y The axis is perpendicular to the direction of the take-up roller. X Establish a rectangular coordinate system with the midpoint of the roller as the origin; A fiber in the fiber web (the first) Root fibers), Y Axis coordinates are Fiber length is The fiber fineness is ; Therefore, within the cluster region, the first Root fibers in X The displacement difference on the shaft is The displacement on the Y-axis is ; and Obtained by the following formula; ； Where h is the vertical distance from the winding roller to the flare opening of the collection bucket at each moment, h1≤h≤h2, and h1 and h2 are related to the overlap length and the effective output length; Simulation calculations can obtain the coordinates of the head end of each fiber in the overlapped combed fiber web. ; After the fibers are bundled through the taut end of the combing sliver, the coordinates of the fiber ends in the output combed sliver can be obtained. Wherein, the fiber's coordinate on the X-axis is The coordinate on the Y-axis is ; Calculate the unevenness of combed sliver; Finally, through simulation calculations, the optimal position of the taut hole of the combing sliver was determined based on the unevenness of the combing sliver.

2. The method for combing and slivering ramie, flaxseed, and wool fibers according to claim 1, characterized in that, The position of the guide rollers can be determined by the following methods: Define the combing unit closest to the back roller of the drawing and drafting mechanism as the first unit, the second unit as the second unit, and the farthest unit as the nth unit. Based on the simulation method in step A, the coordinates of the head end of the fiber in the combed sliver can be obtained as follows: ; The coordinates of the fibers within the combed sliver output from n combing units were obtained through multiple simulations. The coordinates of the fibers within the combed sliver output from the j-th combing unit were defined as follows: ; From the first to the nth combing unit, the vertical distances from the exit roller to the guide roller are L1, L2, ..., L... n The horizontal distance from the output roller to the guide roller is an adjustable length, designated as G1, G2, ..., G... n ; The distance between the guide roller of the j-th combing machine and the rear roller of the drawing frame is M1, M2, ..., M. n The lengths of the yarn from the exit roller of each combing machine to the back roller of the drawing and drafting mechanism are R1, R2, R3, ..., R... n ; ； Therefore, the difference between the head end of the first combed sliver and the head end of the second combed sliver is R1+R2, the difference between the head end of the first combed sliver and the head end of the third combed sliver is R1+R3, and so on. That is, when the combed sliver output from the j-th combing unit reaches the rear roller of the drawing and drafting mechanism, the fiber X-axis coordinate is... ; Finally, the unevenness of the combined combed slivers is calculated. The unevenness of the combined strips is calculated using the following method: Given m segments of length Δ, the weight w of the k-th segment of each combed sliver can be calculated. j (k); Then the total weight of the merged segment is calculated as w(k); ； After merging, the unevenness of the merged strip is the coefficient of variation of the weight w of the m segments; Through simulation calculations, the position of the guide roller is determined based on the unevenness of the combed slivers, so that the coarse and fine details of adjacent combed slivers are matched and combined.

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